IBM is not ready to guarantee that its computer programs are compatible with Oracle's recently launched version of the Linux operating system, an IBM spokesman said on Friday. This means that if IBM software programs turn out to be incompatible with Oracle Enterprise Linux, then it will be up to Oracle - and not IBM - to resolve the issue, said IBM spokesman Matthew McMahon.

By linux compatible... I've built a few oracle servers on linux and while I think now could do it with any distro but you have to groom everything to fit oracle, there's no just switching oracle around to fit the distro.
Would I call oracle linux_compatible, well, no, there is a lot of conversion and modification required. I haven't seen any other app that won't work with a linux modified to run oracle on the other hand either.